Iran will continue to block any attempt by the United States to influence that country or the affairs of the broader Middle East in spite of last month’s nuclear deal, the country’s supreme leader said in a speech Monday.

Ayatollah Ali Khamenei’s comments to a meeting of Islamic broadcasters and scholars were the latest sign that the deal signed July 14 has not yet led to a thaw in the broader hostility between the United States and Iran — at least not publicly.

Khamenei, who has consistently been suspicious of U.S. intentions throughout the two-year-long negotiations, repeated his claim that Washington had wanted to use the deal as a wedge against his Shiite Muslim theocracy.

Noting that the deal had not yet been approved by lawmakers in either country, he said: “We will firmly block their way. We will not allow the U.S. to make economic, political or cultural inroads into the country. We will counter such infiltration with all our power.”